Time for touching
Touching your phone with your fingers seems second nature now, but this type of interaction was revolutionary back when the original iPhone was introduced. Most phones did not have a touchscreen, and those few phones that did have a touchscreen used a stylus. Using your finger as an input device was simple but genius. Once everyone experienced the touchscreen interface, there was no going back. The good ole stylus persists, but it is now a companion to the finger, not a replacement.